is 255715311-1
has 16,771,980 decimal digits
takes 118.086 GHz-days to do one L-L test
Last-known PrimeNet details:
1 L-L tests remaining
ResidueStatus
L-L4F6CBCD1A25C8C__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27334.332564.3836%2,000,00040,000,00012.50905.9323%46.841470.3159%7.9970%
PrimeNet2692.142862.3188%240,00010,000,0002.37175.3642%4.514567.6830%5.3642%
GPU7227334.332564.3836%360,00012,000,0003.05533.9365%37.387868.3201%3.9365%
Difference---+1,640,000+28,000,000+9.4537+1.9958%+9.4537+1.9958%+1.9958%

Known prime factors (1 factor, 132.4 bits, 0.00023766% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
55715311723975324143392601008628574175845130683140132.41164970948842356152423579630936265
32 × 5 × 13 × 127 × 1433 × 1627 × 4801 × 6637 × 830237 × 14178173
830,23714,178,1732019-01-072.375e+94.78645.1927

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-05-07T14:13:00curtiscjckl-4600685,000685,000---2.105--1.889%
2019-01-07T07:10:57VictordeHollanderManual testing2,000,00040,000,000640132.41112.51236.225.025.932%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-15T00:00:00ANONYMOUSv4_computers?253--2.15367e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers?253--2.15367e-5--
2000-03-01T00:00:00ANONYMOUSv4_computers?254--4.30734e-5--
2000-06-11T00:00:00ANONYMOUSv4_computers?256--0.000--
2001-09-30T00:00:00ANONYMOUSv4_computers?257--0.000--
2002-08-10T00:00:00ANONYMOUSv4_computers?258--0.001--
2008-09-22T01:23:00ANONYMOUSManual testing?264--0.035--
2009-01-05T17:21:00Sturle Sundeantonov.ifi264265--0.067--
2009-01-08T03:41:00symalladold_laptop265266--0.134--
2009-03-14T10:33:00Andreas Jantoskiwi266267--0.268--
2009-06-07T23:44:00ANONYMOUS267268--0.536--
2011-04-08T15:38:00GrunwalderGIMPcompute-0-4268269--1.073--
2011-06-04T23:41:00scrolllockpeer-002269270--2.146--
2012-04-28T22:37:00XyzzyManual testing270271--4.292--
2012-04-28T22:37:00XyzzyManual testing271272--8.584--
2016-02-19T19:36:40ANONYMOUSManual testing272273--17.17--


ECM factoring results:
Exponent "55715311" not found


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2012-06-25T17:11:00curtiscjckl-46004F6CBCD1A25C8C__118.1


PRP results:
Exponent "55715311" not found


P-1 factor-bounds graph:
B1 = 2,000,000, B2 = 40,000,000 (stage 2)
B1 = 2,000,000 (stage 1)
B1 = 685,000 (stage 1)
104
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107
104
105
106
107
108
TF factor-bounds graph:
273
272
271
270
269
268
267
266
265
264
258
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256
254
253
250
260
270
280
290
2100
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Last modified: 2019-01-07T07:10:57+00:00